# NexusAPI Crypto Address Balance Lookup

> NexusAPI Crypto Address Balance Lookup is a paid API for AI agents from nexus-api-virid.vercel.app, paid per call via x402, $0.149836/call, status unknown (last checked 2026-09-13).

Returns the cryptocurrency balance for a given blockchain address

## Facts

- Endpoint: POST https://nexus-api-virid.vercel.app/api/crypto/address/balance
- Price: $0.149836/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nexusapi-crypto-address-balance-lookup-8abb8996
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Vbj-NyBYiiZUT06lZ2Lkc

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability nexusapi-crypto-address-balance-lookup-8abb8996 -d '<json body>'
```

Example prompt: What's the current crypto balance for the address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e?

## When to prefer this

Use this endpoint when you need a quick, no-API-key lookup of a specific cryptocurrency wallet address balance and are willing to pay per call in USDC on Base. Ideal for AI agents that need on-demand blockchain balance data without managing API credentials.

## Known failure modes

- Invalid or malformed blockchain address returns an error
- Address with no transaction history may return zero balance
- Unsupported chain or token type may yield incomplete results
- Network congestion may cause delayed or stale balance data
- Missing or empty query parameter returns a validation error

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns the cryptocurrency balance held at the specified blockchain address, including token amounts and potentially multi-asset holdings across supported chains.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nexusapi-crypto-address-balance-lookup-8abb8996/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nexus-api-virid.vercel.app](https://www.zero.xyz/host/nexus-api-virid.vercel.app/llms.txt)